during the late Eastern Han dynasty of China.
Life
Little is recorded about Tian Kai in history. He probably started his career as a subordinate of the warlord Gongsun Zan in the Eastern Han dynasty. In the second half of 191, when war broke out between Gongsun Zan and his rival Yuan Shao, Gongsun Zan sent Tian Kai to seize control of Qing Province, which was then under Yuan Shao's control. Tian Kai was appointed as the Inspector of Qing Province in 192. However, Tian Kai only managed to gain control over the northern part of Qing Province, while the southern part remained under the control of Yuan Tan, Yuan Shao's eldest son. The next year he was driven out of Qing. In 193, Gongsun Zan and Yuan Shao agreed to a truce after two years of battles against each other.
In 194, Xu Province came under attack by the warlord Cao Cao. Tao Qian, the Governor of Xu Province, approached his neighbours for help, one of whom was Tian Kai. Tian Kai and Liu Bei, then the Chancellor of Pingyuan Commandery, led their troops to Xu Province to assist Tao Qian and force Cao Cao to retreat.
In 198, war broke out between Gongsun Zan and Yuan Shao again. Tian Kai fought on Gongsun Zan's side in the Battle of Yijing and was killed in action.
田楷（? - 199年），東漢時期人物，為公孫瓚部下。那時，公孫瓚軍團與袁紹對峙，公孫瓚以嚴綱擔任冀州首長，田楷擔任青州首長，單經當兗州首長。後來，青州刺史田楷和劉備一起抵抗冀州牧袁紹，立下不少功勞，劉備也被封為平原令，後來升平原相。曹操討伐徐州，徐州牧陶謙派遣特使向田楷告急，田楷和劉備一起去救他，但到後來，徐州以北還是被曹操佔領。田楷最終與袁紹交戰而死。